试图运行谷歌浏览器的webdriver测试，但无法运行它给一些例外

Question

package mypac; 
import org.openqa.selenium.*; 
import org.openqa.selenium.chrome.ChromeDriver; 
import org.openqa.selenium.firefox.*; 
import org.openqa.selenium.WebDriver; 
public class Mytest { 
    public static void main(String[] args) { 
     String baseurl = "http://www.timecrunch.me"; 
     WebDriver driver = new FirefoxDriver(); 
     System.setProperty("webdriver.chrome.driver", "D:\\chromedriver_win32\\chromedriver.exe"); 
     WebDriver driver1 = new ChromeDriver(); 
     driver.get(baseurl); 
     driver.findElement(By.name("wpusername")).sendKeys("ankitramola37"); 
     driver.findElement(By.name("wppassword")). 
     sendKeys("ongrapha"); 
     driver.findElement(By.id("logoutBtn")).click(); 
    driver.findElement(By.id("fcNewEventTitle ")).click(); 
    driver.findElement(By.id("fcNewEventTitle ")).sendKeys("birthday "); 
    driver1.get(baseurl); 
    driver1.findElement(By.name("wpusername ")).sendKeys("ankitramola37 "); 
    driver1.findElement(By.name("wppassword ")).sendKeys("ongrapha "); 
    driver1.findElement(By.id("logoutBtn ")).click(); 
    driver1.findElement(By.id("fcNewEventTitle ")).click(); 
    driver1.findElement(By.id("fcNewEventTitle ")).sendKeys("birthday "); 
    } 
} 

尝试这种代码，但无法运行

exception Starting ChromeDriver (v2.7.236900) on port 19245 
Exception in thread "main " org.openqa.selenium.NoSuchElementException: Unable to locate 
element: {" 
     method ":" 
     id "," 
     selector ":" 
     fcNewEventTitle "} 
Command duration or timeout: 12.47 seconds 
For documentation on this error, please visit: http://seleniumhq.org/exceptions 
/no_such_element.html 
Build info: version: '2.39.0', revision: 'ff23eac', time: '2013-12-16 16:12:12' 
System info: host: 'Comp-PC', ip: '192.168.2.28', os.name: 'Windows 7', os.arch: 'x86', 
os.version: '6.1', java.version: '1.7.0_51' 
Session ID: 5ff1488c-950a-47e2-8f80-a62bcc5766d7 
Driver info: org.openqa.selenium.firefox.FirefoxDriver 
Capabilities [{platform=XP, acceptSslCerts=true, javascriptEnabled=true, 
cssSelectorsEnabled=true, databaseEnabled=true, browserName=firefox, handlesAlerts=true 
, browserConnectionEnabled=true, webStorageEnabled=true, nativeEvents=true, 
rotatable=false, locationContextEnabled=true, applicationCacheEnabled=true 
, takesScreenshot=true, version=26.0}] 
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) 
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) 
at java.lang.reflect.Constructor.newInstance(Unknown Source) 
at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:193) 
at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:145) 
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:554) 
at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:307) 
at org.openqa.selenium.remote.RemoteWebDriver.findElementById(RemoteWebDriver.java:348) 
at org.openqa.selenium.By$ById.findElement(By.java:220) 
at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:299) 
at mypac.Mytest.main(Mytest.java:25) 
Caused by: org.openqa.selenium.remote.ErrorHandler$UnknownServerException: Unable to 
locate element: {" 
     method ":" 
     id "," 
     selector ":" 
     fcNewEventTitle "} 
Build info: version: '2.39.0', revision: 'ff23eac', time: '2013-12-16 16:12:12' 
System info: host: 'Comp-PC', ip: '192.168.2.28', os.name: 'Windows 7', os.arch: 'x86', 
os.version: '6.1', java.version: '1.7.0_51' 
Driver info: driver.version: unknown 
at <anonymous class>.FirefoxDriver.prototype.findElementInternal_(file:///C:/User 
s/Comp/AppData/Local/Temp/anonymous1178081315003174620webdriver-profile/extensions 
/fxdriver@googlecode.com/components/driver_component.js:8860) 
at <anonymous class>.FirefoxDriver.prototype.findElement(file:///C:/Users 
/Comp/AppData/Local/Temp/anonymous1178081315003174620webdriver-profile/extensions 
/fxdriver@googlecode.com/components/driver_component.js:8869) 
at <anonymous class>.DelayedCommand.prototype.executeInternal_/h(file:///C:/Users 
/Comp/AppData/Local/Temp/anonymous1178081315003174620webdriver-profile/extensions 
/fxdriver@googlecode.com/components/command_processor.js:10831) 
at <anonymous class>.DelayedCommand.prototype.executeInternal_(file:///C:/Users 
/Comp/AppData/Local/Temp/anonymous1178081315003174620webdriver-profile/extensions 
/fxdriver@googlecode.com/components/command_processor.js:10836) 
at <anonymous class>.DelayedCommand.prototype.execute/<(file:///C:/Users 
/Comp/AppData/Local/Temp/anonymous1178081315003174620webdriver-profile/ 
/fxdriver@googlecode.com/components/command_processor.js:107`enter code here`78) 

Answer 1

的错误是由于因为元素，你的努力定位fcNewEventTitle不存在，这给了这个错误：

Unable to 

locate element: {"method":"id","selector":"fcNewEventTitle"} 
. . . . 

之前，你做这样的事情：

driver1.findElement(By.id("fcNewEventTitle")).click(); 

等待那个元素。有关更多详细信息，请参见here。